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Math Help - URGENT help needed in Statistics!

  1. #1
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    URGENT help needed in Statistics!

    need answer to two q's!

    The amount of annual snowfall in a certain mountain range is normally distributed with a mean of 109 inches, and a standard deviation of 10 inches. If 40 snowfall amounts are randomly selected, find mu(x-bar) for the sampling distribution of sample means with samples of size 40.

    The amount of annual snowfall in a certain mountain range is normally distributed with a mean of 109 inches, and a standard deviation of 10 inches. If 40 snowfall amounts are randomly selected, find roe(x-bar) for the sampling distribution of sample means with samples of size 40.

    thanks and cheers!
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by darren_a1 View Post
    need answer to two q's!

    The amount of annual snowfall in a certain mountain range is normally distributed with a mean of 109 inches, and a standard deviation of 10 inches. If 40 snowfall amounts are randomly selected, find mu(x-bar) for the sampling distribution of sample means with samples of size 40.

    The amount of annual snowfall in a certain mountain range is normally distributed with a mean of 109 inches, and a standard deviation of 10 inches. If 40 snowfall amounts are randomly selected, find roe(x-bar) for the sampling distribution of sample means with samples of size 40.

    thanks and cheers!
    The sample means are normally distributed with mean 109 and SD 10/sqrt(40).

    RonL
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